# Adding two text-format time values
**URL:** https://community.homey.app/t/adding-two-text-format-time-values/156569
**Category:** Questions & Help
**Tags:** advancedflow
**Created:** [June 25, 2026, 8:25pm UTC](https://community.homey.app/t/adding-two-text-format-time-values/156569 "2026-06-25T20:25:19Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@bobha](https://community.homey.app/u/bobha)
#### Post date: [June 25, 2026, 8:25pm UTC](https://community.homey.app/t/adding-two-text-format-time-values/156569/1 "2026-06-25T20:25:19Z")
Please excuse me if this is obvious, but I have been going round in circles trying to find the solution.
I want to be able to enter two time values as text (e.g. 15:17) and add them (start time + duration = stop time). Entering the two text values as variables via the Advanced flow “ask” function works well, but then I don’t know how to combine them. Normal {{}} notation arithmetic does not work. Do I need to convert them to another format first?
Any help would be much appreciated.
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### Author:  [@Justin\_de\_Knegt](https://community.homey.app/u/Justin_de_Knegt)
#### Post date: [June 26, 2026, 5:37am UTC](https://community.homey.app/t/adding-two-text-format-time-values/156569/2 "2026-06-26T05:37:59Z")
As far as I know this is not possible with a default flow card in Homey.
You could make an Homey script that does the math for you, or perhaps the app [Better Logic Library](https://homey.app/en-us/app/net.i-dev.betterlogic/Better-Logic-Library/) could help you, but I don’t have any experience with that app.
But I do find this an interesting case, so I’m wondering if someone else has an other/better idea to solve this problem!
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### Author:  [@bobha](https://community.homey.app/u/bobha)
#### Post date: [June 26, 2026, 6:51am UTC](https://community.homey.app/t/adding-two-text-format-time-values/156569/3 "2026-06-26T06:51:27Z")
Bob Thanks Justin,. That’s more or less what I expected. I’ll dive into BLL. Bob
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### Author:  [@Peter\_Kawa](https://community.homey.app/u/Peter_Kawa)
#### Post date: [June 26, 2026, 10:34pm UTC](https://community.homey.app/t/adding-two-text-format-time-values/156569/4 "2026-06-26T22:34:56Z")
Hoi Bobha,
Hier wat voorbeelden. Tik op de eerste link om de hele post met flow screenshots te kunnen zien:
> [@Get/set alarm time through flow and audio feedback](https://community.homey.app/t/get-set-alarm-time-through-flow-and-audio-feedback/153740/4):
>
> As I don’t use the Homey alarms, I was really surprised there’s no related tags with day(s) & time available. With Timey app you’d be able to work around it. Time calculations using BLL app has a learning curve, but maybe these examples help a bit: . And I suggest to inform with Athom why the “Alarm” tags lack : homey.app/support
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### Author:  [@OH2TH](https://community.homey.app/u/OH2TH)
#### Post date: [June 27, 2026, 5:13am UTC](https://community.homey.app/t/adding-two-text-format-time-values/156569/5 "2026-06-27T05:13:58Z")
> If you could please keep the conversation in one language in the topic, then more people will be able to participate and help you. Please translate your post into English, otherwise it will be deleted in three days to keep the thread in just one language as stated in the forum rules [Welcome to the forum!](https://community.homey.app/t/31)
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### Author:  [@bobha](https://community.homey.app/u/bobha)
#### Post date: [June 27, 2026, 7:11am UTC](https://community.homey.app/t/adding-two-text-format-time-values/156569/6 "2026-06-27T07:11:44Z")
Sorry, missed that. Now translated.